CVE-2026-53755

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{"affected": [{"affectedData": [{"product": "crawl4ai", "vendor": "unclecode", "versions": [{"status": "affected", "version": "< 0.8.9"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:kidocode:crawl4ai:*:*:*:*:*:*:*:*", "matchCriteriaId": "788D4958-2D0D-43F1-BFC2-751DAC09C342", "versionEndExcluding": "0.8.9", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Crawl4AI is an open-source LLM friendly web crawler & scraper. Prior to 0.8.9, the Docker API server applied its SSRF destination check to the crawl target URL only, not to the proxy address. An unauthenticated request could supply a proxy pointing at an internal IP and route the browser through it, reaching internal services and cloud-metadata endpoints, while using a perfectly valid crawl URL. The Docker API is unauthenticated by default. /crawl, /crawl/stream, and /crawl/job accept a browser_config (and crawler_config). The following all feed Chromium's egress and were unchecked: browser_config.proxy_config.server, browser_config.proxy (deprecated field), crawler_config.proxy_config.server, and --proxy-server / --proxy-pac-url / --proxy-bypass-list / --host-resolver-rules flags in browser_config.extra_args. This vulnerability is fixed in 0.8.9."}, {"lang": "es", "value": "Crawl4AI es un rastreador y extractor web de c\u00f3digo abierto compatible con LLM. Antes de la versi\u00f3n 0.8.9, el servidor API de Docker aplicaba su verificaci\u00f3n de destino SSRF solo a la URL objetivo de rastreo, no a la direcci\u00f3n del proxy. Una solicitud no autenticada podr\u00eda proporcionar un proxy que apunte a una IP interna y enrutar el navegador a trav\u00e9s de \u00e9l, alcanzando servicios internos y puntos finales de metadatos en la nube, mientras se utilizaba una URL de rastreo perfectamente v\u00e1lida. La API de Docker no est\u00e1 autenticada por defecto. /crawl, /crawl/stream y /crawl/job aceptan una browser_config (y crawler_config). Los siguientes alimentaban la salida de Chromium y no se verificaban: browser_config.proxy_config.server, browser_config.proxy (campo obsoleto), crawler_config.proxy_config.server, y los flags --proxy-server / --proxy-pac-url / --proxy-bypass-list / --host-resolver-rules en browser_config.extra_args. Esta vulnerabilidad est\u00e1 corregida en la versi\u00f3n 0.8.9."}], "id": "CVE-2026-53755", "lastModified": "2026-10-25T23:10:00.167", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.6, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 4.0, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-53755", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-06-26T15:01:20.774758Z", "version": "2.0.3"}}]}, "published": "2026-06-23T19:17:07.477", "references": [{"source": "security-advisories@github.com", "tags": ["Third Party Advisory"], "url": "https://github.com/unclecode/crawl4ai/security/advisories/GHSA-6qhc-x826-342c"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-918"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

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